* {
 margin: 0px;
 padding: 0px;
}

html {
  margin: 0px;
  padding: 0px;
  height: 100%;
  width: 100%;
}

body {
  margin: 0px;
  padding: 0px;
  height: 100%;
  width: 100%;
}

.main {
  margin: 0px;
  padding: 0px;
  height: 100%;
  width: 100%;
}

._top {
  width: 100%;
  height: 80px;
  line-height: 80px;
}

._bottom {
  width: 100%;
  height: calc( 100% - 172px );
}

._msg_area {
  width: 100%;
  height: 100%;
}

.msg {
  width: calc( 100% - 201px );
  height: 100%;
  float: left;
  border-bottom: 1px solid #A9A9A9;
  border-right: 1px solid #A9A9A9;
}

._input {
  width: calc( 100% - 201px );
  height: 90px;
  bottom: 0px;
  position: fixed;
}

.inputMessage {
  width: calc( 100% - 100px );
  height: 60px;
  font-size: 18px;
  position: absolute;
  float: left;
  resize: none;
}

.inputArea {
  width: 100%;
  position: absolute;
  bottom: 0px;
  height: 60px;
}

.leftArea {
  width: 200px;
  height: 60px;
}

.sendBtn {
  width: 100px;
  height: 60px;
  position: relative;
  font-size: 20px;
  float: right;
  cursor: pointer;
  line-height: 60px;
  text-align: center;
  border-right: 1px solid #A9A9A9;
  border-top: 1px solid #A9A9A9;
}

.showMsg {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  float: left;
}

.chat {
  display: none;
  height: 100%;
}

.loginDiv {
  top: 45%;
  left: 45%;
  position: absolute;
  text-align: center;
}

.userList {
  width: 195px;
  height: 100%;
  position: relative;;
  float: left;
  border-bottom: 1px solid #A9A9A9;
}

.tools {
  width: 100%;
  position: absolute;
  border-right: 1px solid #A9A9A9;
  height: 31px;
}

.showUserName {
  margin-left: 90px;
}
